Controlled asynchronous drive with cascade and common rotor

FIELD: electricity.

SUBSTANCE: asynchronous drive with cascade and common rotor comprises two electric motors connected coaxially, which magnet systems are axial and placed in the same housing at the same shaft fixed horizontally in bearing assemblies of the housing. Stator of the first electric motor is fixed rigidly by its one side to the housing. Rotor of both motors are joined in a single structure comprising joined magnet core with radial slots placed at the left and right side of the rotor, wherein squirrel-cage winding placed with its turns passing from the left lock ring placed at inner left side of the joined rotor, then through the left slot, then through outer side of the rotor and finally through the right slot to the right lock ring placed at the right inner side of the joined rotor. Stator of the second electric motor is fixed rigidly and by its teeth is faced towards stator teeth of the first electric motor. Stator winding of the second electric motor is connected to variable resistors controlling change in rotation velocity and moment of the controlled electric drive with cascade.

EFFECT: reliability improvement.

1 dwg

 

The invention relates to electrical engineering, in particular to electrical machines with multiple rotors and stators and the actuator, and can be effectively used in industry, construction, transportation and other industries.

Known closest to the invention on the physical essence of the cascade connection of two asynchronous motors with slip-ring rotors mounted on a common base, rigidly interconnected by shafts (Kostenko M. P., Piotrowski, L. M. Electrical machines. In part 2 part 2. - The AC machine. Ed. 3-E. - L.: Energy, 1973, p. 532). And wound rotors are interconnected and electrically. The power from the network is supplied to the stator winding of the first motor. The management of such a cascade is performed by means of rheostats included in the stator winding of the second motor.

However, this design has a number of drawbacks. The main drawback is that the design includes a contact ring, which lowers the reliability of the cascade and increasing the loss. The second drawback is the bulky design. This is because compared to squirrel cage induction motors motors with slip-ring rotors are cumbersome and expensive, since the rotor winding is more difficult to manufacture and on the rotor there is a contact node.

Most �linkim to the invention by the design and the achieved result is driven cascade electric drive (patent No. 2173927, 2001, the authors of Haitov B. H., B. K. Popov, Popov O. B.), containing two connected coaxially to the motor, a magnetic system which is made of axial and are located in the same building and on common shaft which is horizontally fixed in bearing housing, and one side of the stator of the first electric motor is rigidly connected with the housing, and on the other side between its three-phase winding and gross hole coils are controlled coupling located opposite the two rings of small and large diameter of non-magnetic material located on the bearing of the rotor of the first motor, the other side of which is made annular gap, the free space which is filled with a ferromagnetic powder, a stator of the second motor is located on the bearing and has a projection in the form of a broad thin ring of the same material as the stator and enters the slit of the larger diameter of the rotor of the first electric motor, providing the network connection single coil controlled couplings rigid connection of the rotor of the first motor and the stator of the second motor, the rotor of which is rigidly connected to the shaft, and between the first rotor and the stator of the second motor is the metal part in the form of a hollow Cup-like projection entering the slot of a small diameter rotor� first motor, ensure when applying mains voltage in the other coil driven clutch rigid connection of the rotor of the first electric motor with a shaft that is an output and the stator of the second motor are arranged sliding contacts which are powered by mains voltage.

However the construction of such a cascade electric drive is quite complex, as it has inside ferropericlase couplings that are managed via the contact system. There are also restrictions on the smooth management of the specified drive. The disadvantage is that the power of the second motor is carried out via contact system. The presence of movable contacts is the cause of lowering the reliability of the design as a whole.

The object of the invention is the simplification and reduction of construction, the unification of the rotors into a single unit and, as a consequence, with the exception of the contact device in the system.

The technical result of the invention is to improve the reliability and smoothness of the electric drive control.

The technical result is achieved in that the driven cascading asynchronous electric drive with a total rotor contains two connected coaxially to the motor, a magnetic system which is made of axial, are located in one case and n� the same shaft, which is horizontally fixed in bearing housing, and one side of the stator of the first electric motor is rigidly connected with the housing, the rotors of both motors combined into a single structure that contains the combined magnetic core with radial grooves disposed on left and right sides of the rotor, which is short-circuited winding in the form of a squirrel cage, the windings of which extend from the left of the locking ring located on the left inner side of the joint of the rotor, then along the left slot, then on the outer side of the rotor, and then on right groove to the right of the closing ring on the right inner side of the joint of the rotor, the stator of the second electric motor is rigidly connected with the housing and with its teeth facing the teeth of the stator of the first motor, the windings of the stator of the second motor is connected to the rheostat by which the change of the rotation speed and torque controlled cascade drive.

By combining the rotors into a single unit disappears, the contact system and thereby increases the reliability, and the use of two stators helps to improve speed control and torque device.

The drawing shows a General view of the proposed controlled cascade of the asynchronous electric drive with common�m rotor in the section.

Managed cascading asynchronous electric drive with a total rotor comprises a housing of the actuator 1, a horizontally positioned on bearings 3 shaft 2, on which is keyed node is fixed to the magnetic core of the United of the rotor 8. In the left part of the housing of the actuator 1 is embedded an annular magnetic core 4 of the left stator with grooves in which are located three-phase winding 5, receiving power from the network through the conductors 6. The magnetic circuit of the rotor 8 includes grooves on left and right sides, in which winding is stacked 7 in the form of a modified squirrel cage. This coil is wound in the form of two short-circuiting rings 12 located on the left and right sides of the inner surface of the rotor. Ring 12 is connected by conductors of the winding 7, which begin at the left short-circuiting ring 12, pass around the left-hand grooves of the rotor, then on the outer side of the rotor and the right rotor slots fit and connect with the right short-circuiting ring 12. In the right part of the housing of the actuator 1 is embedded an annular magnetic core 11 of the right stator with grooves in which are located three-phase winding 10 connected to three control rheostat 9.

Managed cascading asynchronous electric drive with a total rotor operates as follows.

On three-phase system conductors 6 enters onmoduleload stator 5 three-phase current, generates a rotating magnetic field, which induces in the left side of the conductors 7 squirrel cage of the joint of the rotor electromotive force (EMF). Induced EMF provides in turn the flow of currents in the squirrel cage 7. These currents create in the rotor 8 rotating synchronously with the field of the stator 4 by a magnetic field. The magnetic field of the stator 4 and the rotor 8, interact to create torque on the rotor 8, causing the rotor to rotate with a certain slide relative to the exciting field of the stator 4. Rotating at low speed, the magnetic field created by current flowing in the right side conductors of squirrel cage 7, adding in speed with the speed of rotation of the rotor induces in the three-phase winding 10 of the right stator of the electric drive 11 EMF with a frequency equal to the frequency of the power source of the left stator 4. This EMF creates a system of currents flowing through the winding 10 and the rheostat 9, which controls the actuator, different from the standard motor with wound rotor.

Managed cascading asynchronous electric drive with a common rotor comprising two connected coaxially to the motor, a magnetic system which is made of axial, are located in the same building and on the same shaft which is horizontally fixed in the bearing at�lah corps moreover, one side of the stator of the first electric motor is rigidly connected with the housing, characterized in that the rotors of both motors combined into a single structure that contains the combined magnetic core with radial grooves disposed on left and right sides of the rotor, which is short-circuited winding in the form of a squirrel cage, the windings of which extend from the left of the locking ring located on the left inner side of the joint of the rotor, then along the left slot, then on the outer side of the rotor, and then on right groove to the right of the closing ring on the right inner side of the joint of the rotor, the stator of the second electric motor is rigidly connected with the housing and with its teeth facing the teeth of the stator of the first motor, the windings of the stator of the second motor is connected to the rheostat by which the change of the rotation speed and torque controlled cascade drive.



 

Same patents:

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering and can be used at manufacture of a short-circuited rotor of an asynchronous machine. The invention proposes a manufacturing method of short-circuited rotor (1) for asynchronous machine (2), which includes core (5) with bevelled slots (4), end rings (6) from the first material and short-circuited bars (3; 11; 12) from the second material with higher specific electric conductivity in comparison to the first material, which are moulded-on from faces to core (5) of the rotor, and which are laid into bevelled slots (4) of short-circuited rotor (1) and almost fully fill internal zone (7) of the slots if to look in radial direction of core (5) of the rotor.

EFFECT: increasing efficiency of an asynchronous machine.

24 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: according to this invention winding of alternating current machine with fractional number of slots Q per a pole and phase (both for Q> 1 and Q< 1) is made as per scheme "two stars under 30 el. degrees", with denominator C corresponding to the relationship C = 6·k ± 1, where k = 1, 3, 5 ….

EFFECT: elimination of range of high and low harmonics in MMF curve of the stator thus ensuring reduction of vibrations for stator core, housing of wind generators and generators for small-size hydro-electric power stations.

Electric motor // 2490772

FIELD: electricity.

SUBSTANCE: electric motor contains a rotor with pole permanent magnets magnetised radially and number of poles more than two and a stator consisting of a magnet core in the form of a hollow cylinder and a symmetrical three-phase biplane single-layer winding at inner surface with minimum gaps required for stator assembly between lateral surfaces of working areas of the coils. Working areas of the coils are located along the electric motor axis; at that number of coils in a phase circuit is selected as equal to the number of pole permanent magnets of the rotor.

EFFECT: increasing specific electromagnetic torque of an electric motor by improvement of operating efficiency of its stator winding.

2 dwg

FIELD: electricity.

SUBSTANCE: stator for electrodynamic machines comprises a coil, providing for the possibility to generate ampere-turns ("AT") of a magnetic flow. A coil comprises a foil conductor, comprising a section of foil conductor displacement, configured as capable of displacing sections of the foil conductor and an element of an excitation pole having multiple zones. Sections of the foil conductor are arranged on the element of the excitation pole, which comprises the first and second zones. The first section of the foil conductor is arranged on the first zone, and the second one - on the second zone. A section of foil conductor displacement connects the first section of the foil conductor with the second section of the foil conductor. A version of a foil coil is proposed, with an excitation pole having a surface to oppositely install conical magnets, for instance.

EFFECT: optimised generation of a magnetic flow and improved technology of stator coils making.

23 cl, 20 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, namely, to electric machines, and may be used in industrial mechanisms requiring speed control. The technical result is achieved though the control circuit of single-phase valve electric drive, which includes transistor bridge switch with one of its diagonal being meant for connecting to winding, while the other diagonal of switch bridge being linked with a power source. The control inputs of switch are coupled with control element, which operates by algorithms ensuring its operation under pulse-duration modulation. At the same time, according to the invention, the control element contains micro controller with drive, connection points with transistor switch diagonal and with two microcontroller inputs through voltage stabiliser. The third microcontroller input is connected to control electrodes of transistor switch through the driver so that the diagonals are connected in turn to power supply poles.

EFFECT: increased efficiency of single-phase valve electric drive due to generation of maximum operating torque and start torque as well as current shape close to sinusoid, improved motor performance and simplified control of valve electric drive with reduced overall dimensions.

4 cl, 3 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: electromechanical converter comprises at least one stator-rotor pair, where a stator comprises cores from material with high magnetic permeability, with their ends attached to a support stator ring and aligned in parallel to the main magnetic flow, and between which there are conductors of a multiphase winding, a rotor is made in the form of two coaxially arranged outer and inner inducers - magnetic conductors from material with high magnetic permeability in the form of hollow cylinders fixed as capable of rotation relative to the stator, bearing poles arranged along circumferences with alternating polarity, inverted to the stator via working gaps and covering it, at the same time polarity of poles arranged on the inner and outer inducers opposite to each other is arranged as matching, and number p of pole pairs and number Z of stator cores are related by certain ratios for a double-phase winding (m = 2) and for a triple-phase winding (m = 3).

EFFECT: expanded field of application of an electromechanical converter, simplification of its design with simultaneous increase in accuracy of stator winding phase switching moments, lower requirement to sensitivity of used sensors of rotor angular position and their stability, provision of more accurate moments of phases switching and simplified control operations in production and diagnostics of the converter.

10 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: rotor of an asynchronous electric machine comprises a shaft, a ferromagnetic core fixed coaxially on the shaft - a magnetic conductor with an external surface in the form of a circular cylinder and an electric winding of "squirrel cage" type. At the same time according to this invention, the ferromagnetic core - magnetic conductor consists of longitudinal elements made of material having at least axial electroconductivity, besides, the longitudinal elements with the help of frontal conductors - links are electrically connected to each other only by their end parts, forming a winding of "squirrel cage" type.

EFFECT: considerable improvement of weight and dimension characteristics of an electric machine, reduced prime cost of its manufacturing, considerable reduction of teeth pulsations of the torque on the shaft of the asynchronous electric machine with a rotor made according to this invention.

10 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: device is proposed in an electric machine, in particular, a motor, a generator or an actuator, comprising a stator with teeth (11, 12), which carry coils (15), in particular, single-layer ones, for concentrated windings, a rotor with a permanent magnet moves relative to the stator (11, 12). The stator teeth are arranged with the possibility to locate coils (15) on them generally with a rectangular hole. Advantages are achieved, if the teeth (11, 12) of the stator are made with the possibility to locate generally identical coils (15) on them, which close slots (14, 16). The teeth (11, 12) are alternating rectangular teeth that narrow/expand towards the top and form slots (14, 16) with parallel lateral sides for installation of coils (15). Narrowing teeth (22) preferably have a shorter top (23). Slots have a space to insert a semi-magnetic slot wedge (17, 18) between neighbouring teeth.

EFFECT: simplified and cheaper electric machine with concentrated windings with simultaneous provision of its compactness and high efficiency factor.

2 cl, 4 dwg

Ac electric machine // 2411623

FIELD: electricity.

SUBSTANCE: in AC electric machine, comprising rotor and stator with winding arranged in it and made of K coils, it is suggested to install coils in stator winding so that central angle α1 between axes of cross sections of sides of each coil, determining width of coil, equals α1=(360°+60°·m)/2K; number of coils K is determined by ratio K=(1+m/6)·p, where m - number of phases, p - number of pole pairs of magnetic field, at the same time p is multiple of three for m = 2 and is multiple of two for m = 3.

EFFECT: increased torque and reduction of its pulsations, reduced losses of power in electric machine by development of magnetic flow by stator, acting at all poles of rotor with forces of one direction and having one fixed number of poles, equal to number of rotor poles.

3 cl, 4 dwg

FIELD: electric engineering.

SUBSTANCE: proposed short-circuited rotor with squirrel cage comprises shaft (1) and laminated core of sheet steel (2), in laminated core of sheet steel (2) there are rotor winding (3) rods located, which at both ends of laminated core of sheet steel (2) are pulled through openings (10) of each end plate (9) and closed by short-circuited ring (4), which, being electrically conducting, connects ends of rotor winding (3) rods on one side of short-circuited rotor to squirrel cage, besides each end plate (9) comprises circumferential ledge, which at least partially covers short-circuiting ring (4) with geometric closure at its outer side, besides each end plate (9) comprises part of rotor winding (3) rod and part of short-circuiting ring (4). At the same time, according to the present invention, end plates (9) are arranged as massive and are made of stronger material compared to rods of rotor winding (3) and short-circuiting rings (4), besides rods of rotor winding (3) have bulge at their ends with increased cross section of rod (7), moreover, at least part of rotor winding (3) rods bulge lies in openings (10) of end plates (9), besides transition between bulge and short-circuiting ring (4) is arranged in the form of rounding with transitional radius (8).

EFFECT: improved reliability of short-circuited rotor and asynchronous machine as a whole by elimination of possibility of breakage in transitional area of rotor winding rods and short-circuiting rings, provision of reliable retention of short-circuiting rings at high speeds of rotation and centrifugal forces.

9 cl, 13 dwg

FIELD: electricity.

SUBSTANCE: transformer part of a unit is made with a primary winding connected to a three-phase circuit, and with a secondary z-phase bar winding, arranged in z slots of a transformer magnetic conductor closed at one side with an end ring. The drive part of the unit comprises an induction motor with a short-circuited rotor and stator with a bar winding, electrically connected with the secondary winding of the transformer, and at the other side closed with the end ring. The bars of the secondary winding of the transformer are connected with Z bars-feedthrough plates arranged in a tight partition. Each bar-feedthrough plate at the other side is electrically connected with n bars of the stator winding via intermediate electric wire arched segments adjoining the stator (where n=1, 2, … - multiple number between the bars of the stator winding and the secondary winding of the transformer).

EFFECT: expanded area of application and increased energy characteristics and reliability of a drive-transformer unit.

2 dwg

FIELD: electricity.

SUBSTANCE: in electrical machine the second armature winding is made combined and located in stator slots of the main magnet core; it is equipped with capacitor bank. Second inductor winding is also combines, multi-phase, short-circuited; it is located in stator slots of the main magnet core. The first winding of rotor is connected to toroidal windings of auxiliary magnet core of the rotor; the first winding of stator is connected to output of frequency converter which converts electric energy of current frequency of the second armature winding to required value of control frequency and delivers it to stator winding of the main magnet core in order to create excitation current and rotating electromagnetic field with this control frequency. Control frequency is set at the output so that frequency of output current is permanent notwithstanding frequency of drive rotation.

EFFECT: reducing weight and overall dimensions and improving cooling and ventilation systems.

2 dwg

FIELD: electrical engineering.

SUBSTANCE: transformer part of the unit has the primary winding connected to three-phase network and the secondary winding connected to z-phase bar winding placed inside z groves of the transformer magnet core at one side closed by the short-circuited ring and at the other side connected to Z bars of the stator winding. Propulsion part of the unit contains asynchronous engine with disc squirrel-cage rotor located between two disc stators with bar windings electrically connected to the secondary bar winding of the transformer and from the other side by closed short-circuited rings. Bars of the secondary transformer winding are connected to Z bars of stator windings by bars used as sealed leads-in and located in a sealed bulkhead.

EFFECT: improvement of energy response and reliability of propulsion-transformer unit with simultaneous extension of its application area.

4 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: axial cascade electric drive comprises two coaxially connected electric motors, besides, magnetic systems of two electric motors are made axial and are arranged in one body and on a common shaft, which is horizontally fixed in bearing units of the body, besides, by one side the stator of one electric motor is rigidly connected to the body, and on its other side between the three-phase winding and the shaft hole there are coils of controlled couplings, which are located oppositely to two rings of large and small diameters from a non-magnetic material, a rotor arranged on the bearing, at the other side of which there are ring-shaped slots, the free space of which is filled with a ferromagnetic powder. At the same time, according to the invention, the rotor of the other electric motor is arranged on the bearing and has a ledge in the form of a wide thin ring from the same material as the rotor itself, and enters the slot of the large diameter of the rotor of the other electric motor, providing when connected to the network of one coil of the controlled coupling rigid connection of the rotor of one electric motor with the rotor of the other electric motor, the stator of which is rigidly connected with the shaft, besides, between the rotor of one and rotor of the other electric motor there is a metal part arranged rigidly in the form of a hollow sleeve, with the ledge entering the slot of small diameter of the rotor of one of electric motors, providing when supplying voltage of the supply network to the other coil of the controlled coupling the rigid connection of the rotor of one of electric motors with the common shaft, which is the output one, and on the rotor of the other electric motor there is a ledge of magnetic material, which enters the body of the ferropowder coupling fixed on the body of the electric drive, besides, additionally comprising a current pickup device, the fixed part of which is rigidly fixed on the body of the electric drive, and the movable part is installed on the shaft and supplies electric energy for the widing of the stator rigidly connected to the shaft.

EFFECT: invention provides for getting high speeds of rotation, close to a double rated one at rated value of the torque value, or getting a double torque at rated speed of rotation for a different range of capacities of an electric drive with simultaneous increase of such drive operation reliability.

2 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: invention refers to cascade electric actuators of rotational movement, which consist at least of two asynchronous motors of the same type, and can be used at creation of electric actuators with controlled rotation speed from nominal to double nominal at constant moment, or actuators with double moment at constant nominal rotation speed, as well as at creation of other types of electric actuators. Controlled cascade electric actuator includes two electric motors coaxially installed in housing, each of which consists of rotor and stator; besides, stator of the first electric motor is fixed on housing, and its rotor is fixed on its shaft; fastening rings two of which are fixed on the housing, and the other one is fixed on shaft of the first electric motor, electromagnetic clutches fixed on the housing of electric actuator, three-phase power supply system; rotor of the second electric motor is movable and installed so that it can be freely rotated relative to its shaft, and stator of the second electric motor is fixed on its shaft. Fastening ring rigidly fixed on housing of controlled cascade electric actuator on which there installed are three fixed friction semi-clutches one of which has the possibility of being pulled in order to fix the friction gasket (installed on the first shaft) of its movable semi-clutch sliding along splined recesses of electric motor shaft with freely rotating rotor; the other semi-clutch has the possibility of being pulled in order to fix to the same friction gasket of its semi-clutch entering the cavity of housing of movable rotor, which is coaxial to the above semi-clutch, and the third semi-clutch has the possibility of being pulled in order to fix to the other friction gasket fixed on the electric actuator housing of its semi-clutch entering the cavity of movable rotor housing, which is coaxial to the above semi-clutch.

EFFECT: improved design of cascade electric actuator due to operation improvement of system of electromagnetic clutches and power supply system of one of asynchronous motors, which provides obtaining of high rotation speeds close to double nominal, at nominal value of moment or obtaining of double moment at nominal rotation speed.

3 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the field of electric engineering, in particular, to AC electric drives, and may be used as electromechanical converter for mechanisms, having elastic connection to fixed support. In doubled induction motor, including two rotors with short-circuited windings, fixed stator and movable stator, according to invention, rotors are arranged on different shafts, movable stator is rigidly connected to rotor related to fixed stator, and each of stators is connected to network via individual frequency converter, including metering system and speed controller.

EFFECT: prevention of oscillating loads, and also reduction of electromagnet and mechanical losses at start and in the mode of load overcoming.

1 dwg

FIELD: electricity.

SUBSTANCE: invention relates to cascade electric rotary actuator drives and may be used for production of gearless drives with frequency adjusted from 0 to double nominal at stable nominal rotation speed including reversible and other type drives. The proposed controllable cascade electric drive contains two electric motors mounted coaxially on the housing. Each motor is composed of a rotor rigidly mounted on its shaft and a stator. The stator of one of the electric motors is designed as stationary and is mounted on the housing while the second motor stator is capable of free motion relative of the shaft. According to the invention concept, it additionally contains a fixture ring rigidly mounted on the shaft of the stationary stator motor. Mounted on the fixture ring are two e-magnetic clutches one of them capable of contact with the friction plate that has a projection fitting into the movable stator body concavity which is coaxial to the said projection. The other e-magnetic clutch is capable of contact with its friction plate and of connection, with the help of the said plate, to the movable stator electric motor shaft that has a splined recess for the friction plate to fit in. The working areas of the above two friction plates that come in contact with the above e-magnetic clutches are equal to provide for identical performance of the said e-magnetic clutches. Mounted on the drive housing is a third e-magnetic clutch capable of contact with a third friction plate that has a projection fitting into the movable stator body having a concavity which is coaxial to the said projection of the third friction plate.

EFFECT: extension of the range of the cascade electric drive adjustment due to provision for generation of high rotation speeds close to double the nominal one at constant torque value or possibility to generate a doubled torque value at constant rotation speed.

2 cl, 6 dwg

Induction generator // 2255409

FIELD: electrical engineering; specific electrical machines for off-line power supplies.

SUBSTANCE: proposed self-excited induction generator designed for operation under abnormal environmental conditions and in hermetically sealed power-generating units has squirrel-cage rotor and core-shaped stator with Z teeth whose slots receive stator winding, as well as field capacitors; novelty is that stator winding is made in the form of Z bars closed on one end by means of end ring. Generator also has additional magnetic core with slots receiving three-phase winding and conducting bars connected on one end with Z bars of stator winding and on other end they are closed by means of other end ring to form Z-phase winding.

EFFECT: enhanced reliability, reduced mass and size of induction generator.

5 cl, 3 dwg

The invention relates to the field of electrical engineering, in particular to electrical machines with multiple rotors and stators and the actuator, and may be effectively used in industry, construction, transport and other industries

The invention relates to the field of special electrical machines, in particular to the design of asynchronous electric sealed engines used in industrial plants to operate in a chemically aggressive, radiation and explosive gaseous and liquid environments, at high pressures and temperatures and containing encapsulated stators

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering and can be used at manufacture of a short-circuited rotor of an asynchronous machine. The invention proposes a manufacturing method of short-circuited rotor (1) for asynchronous machine (2), which includes core (5) with bevelled slots (4), end rings (6) from the first material and short-circuited bars (3; 11; 12) from the second material with higher specific electric conductivity in comparison to the first material, which are moulded-on from faces to core (5) of the rotor, and which are laid into bevelled slots (4) of short-circuited rotor (1) and almost fully fill internal zone (7) of the slots if to look in radial direction of core (5) of the rotor.

EFFECT: increasing efficiency of an asynchronous machine.

24 cl, 10 dwg

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